Quarter Mask Elastomeric Review - Flo, Envo & Breathe

A detailed review of the three most popular quarter mask elastomeric masks, and a comparison to other respirators such as disposable N95's All revenue for this video will be donated to support the legal defense fund of Marwa Zaatari's. See the GoFundMe link below to learn more and please donate if you can! https://www.gofundme.com/f/help-to-co... *Links to where to purchase reviewed masks* Envo Mask - https://envomask.com/ Flo Mask - https://flomask.com/ Breathe - https://prescientx.com/products/breat... *What does this data mean* Filtration Efficiency: The ability to filter out ~64nm NaCl particles using my test setup. Higher number is better Time to Breathe: This is a kinda of crappy measurement that I use to estimate breathability. I time how long it takes me to breathe in while holding 0.25in H20 pressure drop. Longer time means the mask is hard to breathe in. Pressure Drop: Using my Time to Breathe data I have estimated NIOSH 85LPM pressure drop. This is a measurement of resistance to airflow, so a lower number is better. *My Data Set can be found here* https://drive.google.com/drive/folder... Find me on Twitter   / masknerd